<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8" />
    <title>latex</title>
    <script src="https://unpkg.com/vue"></script>
</head>
<body>
<div id="app">
    <textarea v-model="tex"  cols="50" rows="10" ></textarea>
    <img  :src="imgUrl" />

</div>

<script  th:src="@{/js/index.js}" />


</body>
</html>